One of the most dangerous aspects of using wireless networks is exposing yourself to what is known as a “man-in-the middle” attack. It is something you’ll want to consider before you send personal information over a free wireless network at a local coffee shop.
It basically works like this: Two parties communicate with each other over a network. A third party, unknown to the other two, intercepts a message, reads it, redirects it to someone else, or changes the content. If successful, all communications between the two parties flow through the attacker's computer without the knowledge of the users themselves.
There are several precautions you can implement to protect yourself from this type of attack.
- Use a Virtual Private Network (VPN)
- Limit transactions over wireless networks
- Keep connection times short
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